I think that the real answer to the question is the lawyers answer to any question, "It Depends." Depends on what you are capable of doing, what the job is requiring, what needs the employer is seeking. There is no cut and dry answer.
OK, if the opportunity presents itself to move, I would take it. Go and see what is around the corner-- you will never know until you try. That was our mantra for 30 years in the AF-- and we moved 17 times in 30 years-- OK, we did NOT have children and I worked long, hard hours-- granted, not for everyone, however, that is what we did. Do I regret it, not a minute of it. Regret not having a family-- well, medically that was not possible, so we sucked it up and moved along.
If the offer comes to move-- take it-- remain flexible and see what is available. You should have a blast-- this is the fun part of the experience.